diff --git a/.gitignore b/.gitignore
index 42963bc..2ba1672 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,6 +6,13 @@
 *.exe
 *.o
 *.so
+display-histogram
+eye-tracking
+pupil-detect
+quad-segmentation
+shape-detect
+straighten-img
+watershed
 
 # Packages #
 ############
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..14e35c7
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,19 @@
+all:display-histogram eye-tracking pupil-detect quad-segmentation shape-detect straighten-img watershed
+
+display-histogram: display-histogram.cpp
+	clang++ display-histogram.cpp -o display-histogram `pkg-config --cflags --libs opencv`
+eye-tracking: eye-tracking.cpp
+	clang++ eye-tracking.cpp -o eye-tracking `pkg-config --cflags --libs opencv`
+pupil-detect: pupil-detect.cpp
+	clang++ pupil-detect.cpp -o pupil-detect `pkg-config --cflags --libs opencv`
+quad-segmentation: quad-segmentation.cpp
+	clang++ quad-segmentation.cpp -o quad-segmentation `pkg-config --cflags --libs opencv`
+shape-detect: shape-detect.cpp
+	clang++ shape-detect.cpp -o shape-detect `pkg-config --cflags --libs opencv`
+straighten-img: straighten-img.cpp
+	clang++ straighten-img.cpp -o straighten-img `pkg-config --cflags --libs opencv`
+watershed: watershed.cpp
+	clang++ watershed.cpp -o watershed `pkg-config --cflags --libs opencv`
+
+clean:
+	rm display-histogram eye-tracking pupil-detect quad-segmentation shape-detect straighten-img watershed
diff --git a/assets/basic-shapes-2.png b/assets/basic-shapes-2.png
new file mode 100644
index 0000000..fbed5f6
Binary files /dev/null and b/assets/basic-shapes-2.png differ
diff --git a/assets/coins.jpg b/assets/coins.jpg
new file mode 100644
index 0000000..5d24002
Binary files /dev/null and b/assets/coins.jpg differ
diff --git a/assets/eye_image.jpg b/assets/eye_image.jpg
new file mode 100644
index 0000000..7e1d099
Binary files /dev/null and b/assets/eye_image.jpg differ
diff --git a/assets/lena.jpg b/assets/lena.jpg
new file mode 100644
index 0000000..30c731f
Binary files /dev/null and b/assets/lena.jpg differ
diff --git a/assets/perspective-quadrilateral.jpg b/assets/perspective-quadrilateral.jpg
new file mode 100644
index 0000000..c48daa3
Binary files /dev/null and b/assets/perspective-quadrilateral.jpg differ
diff --git a/assets/straighten-image-src.jpg b/assets/straighten-image-src.jpg
new file mode 100644
index 0000000..8c7ffb3
Binary files /dev/null and b/assets/straighten-image-src.jpg differ
diff --git a/display-histogram.cpp b/display-histogram.cpp
index 17f5a14..c18e2ef 100644
--- a/display-histogram.cpp
+++ b/display-histogram.cpp
@@ -69,7 +69,7 @@ void showHistogram(Mat& img)
 // Test the `showHistogram()` function above
 int main()
 {
-	Mat src = imread("c:/users/nash/desktop/assets/lena.jpg");
+	Mat src = imread("assets/lena.jpg");
 	if (src.empty())
 		return -1;
 	showHistogram(src);
diff --git a/display-histogram.py b/display-histogram.py
index 0f0fedd..35350ae 100644
--- a/display-histogram.py
+++ b/display-histogram.py
@@ -26,7 +26,7 @@ def show_histogram(im):
 		plt.show()
 
 if __name__ == '__main__':
-	im = cv2.imread("lena.jpg");
+	im = cv2.imread("assets/lena.jpg");
 	if not (im == None):
 		show_histogram(im)
 
diff --git a/pupil-detect.cpp b/pupil-detect.cpp
index 6e51c94..6dc021e 100644
--- a/pupil-detect.cpp
+++ b/pupil-detect.cpp
@@ -10,7 +10,7 @@
 int main(int argc, char** argv)
 {
 	// Load image
-	cv::Mat src = cv::imread("eye_image.jpg");
+	cv::Mat src = cv::imread("assets/eye_image.jpg");
 	if (src.empty())
 		return -1;
 
diff --git a/quad-segmentation.cpp b/quad-segmentation.cpp
index bb341cd..3f59f24 100644
--- a/quad-segmentation.cpp
+++ b/quad-segmentation.cpp
@@ -52,7 +52,7 @@ void sortCorners(std::vector<cv::Point2f>& corners,
 
 int main()
 {
-	cv::Mat src = cv::imread("image.jpg");
+	cv::Mat src = cv::imread("assets/perspective-quadrilateral.jpg");
 	if (src.empty())
 		return -1;
 
diff --git a/straighten-img.cpp b/straighten-img.cpp
index 102e8e5..a3a3b35 100644
--- a/straighten-img.cpp
+++ b/straighten-img.cpp
@@ -67,7 +67,7 @@ void on_mouse(int event, int x, int y, int flags, void* param)
 
 int main()
 {
-	im0 = cv::imread("lena.png");
+	im0 = cv::imread("assets/straighten-image-src.jpg");
 	if (!im0.data)
 	{
 		std::cout << "Cannot load source image!" << std::endl;
diff --git a/watershed.cpp b/watershed.cpp
index 64fe039..192da9a 100644
--- a/watershed.cpp
+++ b/watershed.cpp
@@ -10,7 +10,7 @@
 
 int main()
 {
-	cv::Mat src = cv::imread("coins.jpg");
+	cv::Mat src = cv::imread("assets/coins.jpg");
 	if (!src.data)
 		return -1;